Fixes for signed/unsigned warnings and shadows.
[openssl.git] / apps / s_client.c
1 /* apps/s_client.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  * 
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  * 
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  * 
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from 
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  * 
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  * 
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58 /* ====================================================================
59  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
60  *
61  * Redistribution and use in source and binary forms, with or without
62  * modification, are permitted provided that the following conditions
63  * are met:
64  *
65  * 1. Redistributions of source code must retain the above copyright
66  *    notice, this list of conditions and the following disclaimer. 
67  *
68  * 2. Redistributions in binary form must reproduce the above copyright
69  *    notice, this list of conditions and the following disclaimer in
70  *    the documentation and/or other materials provided with the
71  *    distribution.
72  *
73  * 3. All advertising materials mentioning features or use of this
74  *    software must display the following acknowledgment:
75  *    "This product includes software developed by the OpenSSL Project
76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
77  *
78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79  *    endorse or promote products derived from this software without
80  *    prior written permission. For written permission, please contact
81  *    openssl-core@openssl.org.
82  *
83  * 5. Products derived from this software may not be called "OpenSSL"
84  *    nor may "OpenSSL" appear in their names without prior written
85  *    permission of the OpenSSL Project.
86  *
87  * 6. Redistributions of any form whatsoever must retain the following
88  *    acknowledgment:
89  *    "This product includes software developed by the OpenSSL Project
90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91  *
92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103  * OF THE POSSIBILITY OF SUCH DAMAGE.
104  * ====================================================================
105  *
106  * This product includes cryptographic software written by Eric Young
107  * (eay@cryptsoft.com).  This product includes software written by Tim
108  * Hudson (tjh@cryptsoft.com).
109  *
110  */
111
112 #include <assert.h>
113 #include <stdio.h>
114 #include <stdlib.h>
115 #include <string.h>
116 #include <openssl/e_os2.h>
117 #ifdef OPENSSL_NO_STDIO
118 #define APPS_WIN16
119 #endif
120
121 /* With IPv6, it looks like Digital has mixed up the proper order of
122    recursive header file inclusion, resulting in the compiler complaining
123    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
124    is needed to have fileno() declared correctly...  So let's define u_int */
125 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
126 #define __U_INT
127 typedef unsigned int u_int;
128 #endif
129
130 #define USE_SOCKETS
131 #include "apps.h"
132 #include <openssl/x509.h>
133 #include <openssl/ssl.h>
134 #include <openssl/err.h>
135 #include <openssl/pem.h>
136 #include <openssl/rand.h>
137 #include "s_apps.h"
138 #include "timeouts.h"
139
140 #ifdef OPENSSL_SYS_WINCE
141 /* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
142 #ifdef fileno
143 #undef fileno
144 #endif
145 #define fileno(a) (int)_fileno(a)
146 #endif
147
148
149 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
150 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
151 #undef FIONBIO
152 #endif
153
154 #undef PROG
155 #define PROG    s_client_main
156
157 /*#define SSL_HOST_NAME "www.netscape.com" */
158 /*#define SSL_HOST_NAME "193.118.187.102" */
159 #define SSL_HOST_NAME   "localhost"
160
161 /*#define TEST_CERT "client.pem" */ /* no default cert. */
162
163 #undef BUFSIZZ
164 #define BUFSIZZ 1024*8
165
166 extern int verify_depth;
167 extern int verify_error;
168
169 #ifdef FIONBIO
170 static int c_nbio=0;
171 #endif
172 static int c_Pause=0;
173 static int c_debug=0;
174 static int c_msg=0;
175 static int c_showcerts=0;
176
177 static void sc_usage(void);
178 static void print_stuff(BIO *berr,SSL *con,int full);
179 static BIO *bio_c_out=NULL;
180 static int c_quiet=0;
181 static int c_ign_eof=0;
182
183 static void sc_usage(void)
184         {
185         BIO_printf(bio_err,"usage: s_client args\n");
186         BIO_printf(bio_err,"\n");
187         BIO_printf(bio_err," -host host     - use -connect instead\n");
188         BIO_printf(bio_err," -port port     - use -connect instead\n");
189         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
190
191         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
192         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
193         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
194         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
195         BIO_printf(bio_err,"                 not specified but cert file is.\n");
196         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
197         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
198         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
199         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
200         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
201         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
202         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
203         BIO_printf(bio_err," -debug        - extra output\n");
204 #ifdef WATT32
205         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
206 #endif
207         BIO_printf(bio_err," -msg          - Show protocol messages\n");
208         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
209         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
210 #ifdef FIONBIO
211         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
212 #endif
213         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
214         BIO_printf(bio_err," -quiet        - no s_client output\n");
215         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
216         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
217         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
218         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
219         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");    
220         BIO_printf(bio_err," -mtu          - set the MTU\n");
221         BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
222         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
223         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
224         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
225         BIO_printf(bio_err,"                 command to see what is available\n");
226         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
227         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
228         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
229         BIO_printf(bio_err,"                 only \"smtp\" and \"pop3\" are supported.\n");
230 #ifndef OPENSSL_NO_ENGINE
231         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
232 #endif
233         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
234
235         }
236
237 int MAIN(int, char **);
238
239 int MAIN(int argc, char **argv)
240         {
241         int off=0;
242         SSL *con=NULL,*con2=NULL;
243         X509_STORE *store = NULL;
244         int s,k,width,state=0;
245         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
246         int cbuf_len,cbuf_off;
247         int sbuf_len,sbuf_off;
248         fd_set readfds,writefds;
249         short port=PORT;
250         int full_log=1;
251         char *host=SSL_HOST_NAME;
252         char *cert_file=NULL,*key_file=NULL;
253         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
254         char *passarg = NULL, *pass = NULL;
255         X509 *cert = NULL;
256         EVP_PKEY *key = NULL;
257         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
258         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
259         int crlf=0;
260         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
261         SSL_CTX *ctx=NULL;
262         int ret=1,in_init=1,i,nbio_test=0;
263         int starttls_proto = 0;
264         int prexit = 0, vflags = 0;
265         SSL_METHOD *meth=NULL;
266         int sock_type=SOCK_STREAM;
267         BIO *sbio;
268         char *inrand=NULL;
269 #ifndef OPENSSL_NO_ENGINE
270         char *engine_id=NULL;
271         ENGINE *e=NULL;
272 #endif
273 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
274         struct timeval tv;
275 #endif
276
277         struct sockaddr peer;
278         socklen_t peerlen = sizeof(peer);
279         int enable_timeouts = 0 ;
280         long mtu = 0;
281
282 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
283         meth=SSLv23_client_method();
284 #elif !defined(OPENSSL_NO_SSL3)
285         meth=SSLv3_client_method();
286 #elif !defined(OPENSSL_NO_SSL2)
287         meth=SSLv2_client_method();
288 #endif
289
290         apps_startup();
291         c_Pause=0;
292         c_quiet=0;
293         c_ign_eof=0;
294         c_debug=0;
295         c_msg=0;
296         c_showcerts=0;
297
298         if (bio_err == NULL)
299                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
300
301         if (!load_config(bio_err, NULL))
302                 goto end;
303
304         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
305                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
306                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
307                 {
308                 BIO_printf(bio_err,"out of memory\n");
309                 goto end;
310                 }
311
312         verify_depth=0;
313         verify_error=X509_V_OK;
314 #ifdef FIONBIO
315         c_nbio=0;
316 #endif
317
318         argc--;
319         argv++;
320         while (argc >= 1)
321                 {
322                 if      (strcmp(*argv,"-host") == 0)
323                         {
324                         if (--argc < 1) goto bad;
325                         host= *(++argv);
326                         }
327                 else if (strcmp(*argv,"-port") == 0)
328                         {
329                         if (--argc < 1) goto bad;
330                         port=atoi(*(++argv));
331                         if (port == 0) goto bad;
332                         }
333                 else if (strcmp(*argv,"-connect") == 0)
334                         {
335                         if (--argc < 1) goto bad;
336                         if (!extract_host_port(*(++argv),&host,NULL,&port))
337                                 goto bad;
338                         }
339                 else if (strcmp(*argv,"-verify") == 0)
340                         {
341                         verify=SSL_VERIFY_PEER;
342                         if (--argc < 1) goto bad;
343                         verify_depth=atoi(*(++argv));
344                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
345                         }
346                 else if (strcmp(*argv,"-cert") == 0)
347                         {
348                         if (--argc < 1) goto bad;
349                         cert_file= *(++argv);
350                         }
351                 else if (strcmp(*argv,"-certform") == 0)
352                         {
353                         if (--argc < 1) goto bad;
354                         cert_format = str2fmt(*(++argv));
355                         }
356                 else if (strcmp(*argv,"-crl_check") == 0)
357                         vflags |= X509_V_FLAG_CRL_CHECK;
358                 else if (strcmp(*argv,"-crl_check_all") == 0)
359                         vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;
360                 else if (strcmp(*argv,"-prexit") == 0)
361                         prexit=1;
362                 else if (strcmp(*argv,"-crlf") == 0)
363                         crlf=1;
364                 else if (strcmp(*argv,"-quiet") == 0)
365                         {
366                         c_quiet=1;
367                         c_ign_eof=1;
368                         }
369                 else if (strcmp(*argv,"-ign_eof") == 0)
370                         c_ign_eof=1;
371                 else if (strcmp(*argv,"-pause") == 0)
372                         c_Pause=1;
373                 else if (strcmp(*argv,"-debug") == 0)
374                         c_debug=1;
375 #ifdef WATT32
376                 else if (strcmp(*argv,"-wdebug") == 0)
377                         dbug_init();
378 #endif
379                 else if (strcmp(*argv,"-msg") == 0)
380                         c_msg=1;
381                 else if (strcmp(*argv,"-showcerts") == 0)
382                         c_showcerts=1;
383                 else if (strcmp(*argv,"-nbio_test") == 0)
384                         nbio_test=1;
385                 else if (strcmp(*argv,"-state") == 0)
386                         state=1;
387 #ifndef OPENSSL_NO_SSL2
388                 else if (strcmp(*argv,"-ssl2") == 0)
389                         meth=SSLv2_client_method();
390 #endif
391 #ifndef OPENSSL_NO_SSL3
392                 else if (strcmp(*argv,"-ssl3") == 0)
393                         meth=SSLv3_client_method();
394 #endif
395 #ifndef OPENSSL_NO_TLS1
396                 else if (strcmp(*argv,"-tls1") == 0)
397                         meth=TLSv1_client_method();
398 #endif
399 #ifndef OPENSSL_NO_DTLS1
400                 else if (strcmp(*argv,"-dtls1") == 0)
401                         {
402                         meth=DTLSv1_client_method();
403                         sock_type=SOCK_DGRAM;
404                         }
405                 else if (strcmp(*argv,"-timeout") == 0)
406                         enable_timeouts=1;
407                 else if (strcmp(*argv,"-mtu") == 0)
408                         {
409                         if (--argc < 1) goto bad;
410                         mtu = atol(*(++argv));
411                         }
412 #endif
413                 else if (strcmp(*argv,"-bugs") == 0)
414                         bugs=1;
415                 else if (strcmp(*argv,"-keyform") == 0)
416                         {
417                         if (--argc < 1) goto bad;
418                         key_format = str2fmt(*(++argv));
419                         }
420                 else if (strcmp(*argv,"-pass") == 0)
421                         {
422                         if (--argc < 1) goto bad;
423                         passarg = *(++argv);
424                         }
425                 else if (strcmp(*argv,"-key") == 0)
426                         {
427                         if (--argc < 1) goto bad;
428                         key_file= *(++argv);
429                         }
430                 else if (strcmp(*argv,"-reconnect") == 0)
431                         {
432                         reconnect=5;
433                         }
434                 else if (strcmp(*argv,"-CApath") == 0)
435                         {
436                         if (--argc < 1) goto bad;
437                         CApath= *(++argv);
438                         }
439                 else if (strcmp(*argv,"-CAfile") == 0)
440                         {
441                         if (--argc < 1) goto bad;
442                         CAfile= *(++argv);
443                         }
444                 else if (strcmp(*argv,"-no_tls1") == 0)
445                         off|=SSL_OP_NO_TLSv1;
446                 else if (strcmp(*argv,"-no_ssl3") == 0)
447                         off|=SSL_OP_NO_SSLv3;
448                 else if (strcmp(*argv,"-no_ssl2") == 0)
449                         off|=SSL_OP_NO_SSLv2;
450                 else if (strcmp(*argv,"-serverpref") == 0)
451                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
452                 else if (strcmp(*argv,"-cipher") == 0)
453                         {
454                         if (--argc < 1) goto bad;
455                         cipher= *(++argv);
456                         }
457 #ifdef FIONBIO
458                 else if (strcmp(*argv,"-nbio") == 0)
459                         { c_nbio=1; }
460 #endif
461                 else if (strcmp(*argv,"-starttls") == 0)
462                         {
463                         if (--argc < 1) goto bad;
464                         ++argv;
465                         if (strcmp(*argv,"smtp") == 0)
466                                 starttls_proto = 1;
467                         else if (strcmp(*argv,"pop3") == 0)
468                                 starttls_proto = 2;
469                         else
470                                 goto bad;
471                         }
472 #ifndef OPENSSL_NO_ENGINE
473                 else if (strcmp(*argv,"-engine") == 0)
474                         {
475                         if (--argc < 1) goto bad;
476                         engine_id = *(++argv);
477                         }
478 #endif
479                 else if (strcmp(*argv,"-rand") == 0)
480                         {
481                         if (--argc < 1) goto bad;
482                         inrand= *(++argv);
483                         }
484                 else
485                         {
486                         BIO_printf(bio_err,"unknown option %s\n",*argv);
487                         badop=1;
488                         break;
489                         }
490                 argc--;
491                 argv++;
492                 }
493         if (badop)
494                 {
495 bad:
496                 sc_usage();
497                 goto end;
498                 }
499
500         OpenSSL_add_ssl_algorithms();
501         SSL_load_error_strings();
502
503 #ifndef OPENSSL_NO_ENGINE
504         e = setup_engine(bio_err, engine_id, 1);
505 #endif
506         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
507                 {
508                 BIO_printf(bio_err, "Error getting password\n");
509                 goto end;
510                 }
511
512         if (key_file == NULL)
513                 key_file = cert_file;
514
515
516         if (key_file)
517
518                 {
519
520                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
521                                "client certificate private key file");
522                 if (!key)
523                         {
524                         ERR_print_errors(bio_err);
525                         goto end;
526                         }
527
528                 }
529
530         if (cert_file)
531
532                 {
533                 cert = load_cert(bio_err,cert_file,cert_format,
534                                 NULL, e, "client certificate file");
535
536                 if (!cert)
537                         {
538                         ERR_print_errors(bio_err);
539                         goto end;
540                         }
541                 }
542
543         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
544                 && !RAND_status())
545                 {
546                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
547                 }
548         if (inrand != NULL)
549                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
550                         app_RAND_load_files(inrand));
551
552         if (bio_c_out == NULL)
553                 {
554                 if (c_quiet && !c_debug && !c_msg)
555                         {
556                         bio_c_out=BIO_new(BIO_s_null());
557                         }
558                 else
559                         {
560                         if (bio_c_out == NULL)
561                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
562                         }
563                 }
564
565         ctx=SSL_CTX_new(meth);
566         if (ctx == NULL)
567                 {
568                 ERR_print_errors(bio_err);
569                 goto end;
570                 }
571
572         if (bugs)
573                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
574         else
575                 SSL_CTX_set_options(ctx,off);
576         /* DTLS: partial reads end up discarding unread UDP bytes :-( 
577          * Setting read ahead solves this problem.
578          */
579         if (sock_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
580
581         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
582         if (cipher != NULL)
583                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
584                 BIO_printf(bio_err,"error setting cipher list\n");
585                 ERR_print_errors(bio_err);
586                 goto end;
587         }
588 #if 0
589         else
590                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
591 #endif
592
593         SSL_CTX_set_verify(ctx,verify,verify_callback);
594         if (!set_cert_key_stuff(ctx,cert,key))
595                 goto end;
596
597         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
598                 (!SSL_CTX_set_default_verify_paths(ctx)))
599                 {
600                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
601                 ERR_print_errors(bio_err);
602                 /* goto end; */
603                 }
604
605         store = SSL_CTX_get_cert_store(ctx);
606         X509_STORE_set_flags(store, vflags);
607
608         con=SSL_new(ctx);
609 #ifndef OPENSSL_NO_KRB5
610         if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)
611                 {
612                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);
613                 }
614 #endif  /* OPENSSL_NO_KRB5  */
615 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
616
617 re_start:
618
619         if (init_client(&s,host,port,sock_type) == 0)
620                 {
621                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
622                 SHUTDOWN(s);
623                 goto end;
624                 }
625         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
626
627 #ifdef FIONBIO
628         if (c_nbio)
629                 {
630                 unsigned long l=1;
631                 BIO_printf(bio_c_out,"turning on non blocking io\n");
632                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
633                         {
634                         ERR_print_errors(bio_err);
635                         goto end;
636                         }
637                 }
638 #endif                                              
639         if (c_Pause & 0x01) con->debug=1;
640
641         if ( SSL_version(con) == DTLS1_VERSION)
642                 {
643                 struct timeval timeout;
644
645                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
646                 if (getsockname(s, &peer, &peerlen) < 0)
647                         {
648                         BIO_printf(bio_err, "getsockname:errno=%d\n",
649                                 get_last_socket_error());
650                         SHUTDOWN(s);
651                         goto end;
652                         }
653
654                 BIO_ctrl_set_connected(sbio, 1, &peer);
655
656                 if ( enable_timeouts)
657                         {
658                         timeout.tv_sec = 0;
659                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
660                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
661                         
662                         timeout.tv_sec = 0;
663                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
664                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
665                         }
666
667                 if ( mtu > 0)
668                         {
669                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
670                         SSL_set_mtu(con, mtu);
671                         }
672                 else
673                         /* want to do MTU discovery */
674                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
675                 }
676         else
677                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
678
679
680
681         if (nbio_test)
682                 {
683                 BIO *test;
684
685                 test=BIO_new(BIO_f_nbio_test());
686                 sbio=BIO_push(test,sbio);
687                 }
688
689         if (c_debug)
690                 {
691                 con->debug=1;
692                 BIO_set_callback(sbio,bio_dump_callback);
693                 BIO_set_callback_arg(sbio,bio_c_out);
694                 }
695         if (c_msg)
696                 {
697                 SSL_set_msg_callback(con, msg_cb);
698                 SSL_set_msg_callback_arg(con, bio_c_out);
699                 }
700
701         SSL_set_bio(con,sbio,sbio);
702         SSL_set_connect_state(con);
703
704         /* ok, lets connect */
705         width=SSL_get_fd(con)+1;
706
707         read_tty=1;
708         write_tty=0;
709         tty_on=0;
710         read_ssl=1;
711         write_ssl=1;
712         
713         cbuf_len=0;
714         cbuf_off=0;
715         sbuf_len=0;
716         sbuf_off=0;
717
718         /* This is an ugly hack that does a lot of assumptions */
719         if (starttls_proto == 1)
720                 {
721                 BIO_read(sbio,mbuf,BUFSIZZ);
722                 BIO_printf(sbio,"STARTTLS\r\n");
723                 BIO_read(sbio,sbuf,BUFSIZZ);
724                 }
725         if (starttls_proto == 2)
726                 {
727                 BIO_read(sbio,mbuf,BUFSIZZ);
728                 BIO_printf(sbio,"STLS\r\n");
729                 BIO_read(sbio,sbuf,BUFSIZZ);
730                 }
731
732         for (;;)
733                 {
734                 FD_ZERO(&readfds);
735                 FD_ZERO(&writefds);
736
737                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
738                         {
739                         in_init=1;
740                         tty_on=0;
741                         }
742                 else
743                         {
744                         tty_on=1;
745                         if (in_init)
746                                 {
747                                 in_init=0;
748                                 print_stuff(bio_c_out,con,full_log);
749                                 if (full_log > 0) full_log--;
750
751                                 if (starttls_proto)
752                                         {
753                                         BIO_printf(bio_err,"%s",mbuf);
754                                         /* We don't need to know any more */
755                                         starttls_proto = 0;
756                                         }
757
758                                 if (reconnect)
759                                         {
760                                         reconnect--;
761                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
762                                         SSL_shutdown(con);
763                                         SSL_set_connect_state(con);
764                                         SHUTDOWN(SSL_get_fd(con));
765                                         goto re_start;
766                                         }
767                                 }
768                         }
769
770                 ssl_pending = read_ssl && SSL_pending(con);
771
772                 if (!ssl_pending)
773                         {
774 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
775                         if (tty_on)
776                                 {
777                                 if (read_tty)  FD_SET(fileno(stdin),&readfds);
778                                 if (write_tty) FD_SET(fileno(stdout),&writefds);
779                                 }
780                         if (read_ssl)
781                                 FD_SET(SSL_get_fd(con),&readfds);
782                         if (write_ssl)
783                                 FD_SET(SSL_get_fd(con),&writefds);
784 #else
785                         if(!tty_on || !write_tty) {
786                                 if (read_ssl)
787                                         FD_SET(SSL_get_fd(con),&readfds);
788                                 if (write_ssl)
789                                         FD_SET(SSL_get_fd(con),&writefds);
790                         }
791 #endif
792 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
793                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
794
795                         /* Note: under VMS with SOCKETSHR the second parameter
796                          * is currently of type (int *) whereas under other
797                          * systems it is (void *) if you don't have a cast it
798                          * will choke the compiler: if you do have a cast then
799                          * you can either go for (int *) or (void *).
800                          */
801 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
802                         /* Under Windows/DOS we make the assumption that we can
803                          * always write to the tty: therefore if we need to
804                          * write to the tty we just fall through. Otherwise
805                          * we timeout the select every second and see if there
806                          * are any keypresses. Note: this is a hack, in a proper
807                          * Windows application we wouldn't do this.
808                          */
809                         i=0;
810                         if(!write_tty) {
811                                 if(read_tty) {
812                                         tv.tv_sec = 1;
813                                         tv.tv_usec = 0;
814                                         i=select(width,(void *)&readfds,(void *)&writefds,
815                                                  NULL,&tv);
816 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
817                                         if(!i && (!_kbhit() || !read_tty) ) continue;
818 #else
819                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
820 #endif
821                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
822                                          NULL,NULL);
823                         }
824 #elif defined(OPENSSL_SYS_NETWARE)
825                         if(!write_tty) {
826                                 if(read_tty) {
827                                         tv.tv_sec = 1;
828                                         tv.tv_usec = 0;
829                                         i=select(width,(void *)&readfds,(void *)&writefds,
830                                                 NULL,&tv);
831                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
832                                         NULL,NULL);
833                         }
834 #else
835                         i=select(width,(void *)&readfds,(void *)&writefds,
836                                  NULL,NULL);
837 #endif
838                         if ( i < 0)
839                                 {
840                                 BIO_printf(bio_err,"bad select %d\n",
841                                 get_last_socket_error());
842                                 goto shut;
843                                 /* goto end; */
844                                 }
845                         }
846
847                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
848                         {
849                         k=SSL_write(con,&(cbuf[cbuf_off]),
850                                 (unsigned int)cbuf_len);
851                         switch (SSL_get_error(con,k))
852                                 {
853                         case SSL_ERROR_NONE:
854                                 cbuf_off+=k;
855                                 cbuf_len-=k;
856                                 if (k <= 0) goto end;
857                                 /* we have done a  write(con,NULL,0); */
858                                 if (cbuf_len <= 0)
859                                         {
860                                         read_tty=1;
861                                         write_ssl=0;
862                                         }
863                                 else /* if (cbuf_len > 0) */
864                                         {
865                                         read_tty=0;
866                                         write_ssl=1;
867                                         }
868                                 break;
869                         case SSL_ERROR_WANT_WRITE:
870                                 BIO_printf(bio_c_out,"write W BLOCK\n");
871                                 write_ssl=1;
872                                 read_tty=0;
873                                 break;
874                         case SSL_ERROR_WANT_READ:
875                                 BIO_printf(bio_c_out,"write R BLOCK\n");
876                                 write_tty=0;
877                                 read_ssl=1;
878                                 write_ssl=0;
879                                 break;
880                         case SSL_ERROR_WANT_X509_LOOKUP:
881                                 BIO_printf(bio_c_out,"write X BLOCK\n");
882                                 break;
883                         case SSL_ERROR_ZERO_RETURN:
884                                 if (cbuf_len != 0)
885                                         {
886                                         BIO_printf(bio_c_out,"shutdown\n");
887                                         goto shut;
888                                         }
889                                 else
890                                         {
891                                         read_tty=1;
892                                         write_ssl=0;
893                                         break;
894                                         }
895                                 
896                         case SSL_ERROR_SYSCALL:
897                                 if ((k != 0) || (cbuf_len != 0))
898                                         {
899                                         BIO_printf(bio_err,"write:errno=%d\n",
900                                                 get_last_socket_error());
901                                         goto shut;
902                                         }
903                                 else
904                                         {
905                                         read_tty=1;
906                                         write_ssl=0;
907                                         }
908                                 break;
909                         case SSL_ERROR_SSL:
910                                 ERR_print_errors(bio_err);
911                                 goto shut;
912                                 }
913                         }
914 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
915                 /* Assume Windows/DOS can always write */
916                 else if (!ssl_pending && write_tty)
917 #else
918                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
919 #endif
920                         {
921 #ifdef CHARSET_EBCDIC
922                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
923 #endif
924                         i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
925
926                         if (i <= 0)
927                                 {
928                                 BIO_printf(bio_c_out,"DONE\n");
929                                 goto shut;
930                                 /* goto end; */
931                                 }
932
933                         sbuf_len-=i;;
934                         sbuf_off+=i;
935                         if (sbuf_len <= 0)
936                                 {
937                                 read_ssl=1;
938                                 write_tty=0;
939                                 }
940                         }
941                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
942                         {
943 #ifdef RENEG
944 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
945 #endif
946 #if 1
947                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
948 #else
949 /* Demo for pending and peek :-) */
950                         k=SSL_read(con,sbuf,16);
951 { char zbuf[10240]; 
952 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
953 }
954 #endif
955
956                         switch (SSL_get_error(con,k))
957                                 {
958                         case SSL_ERROR_NONE:
959                                 if (k <= 0)
960                                         goto end;
961                                 sbuf_off=0;
962                                 sbuf_len=k;
963
964                                 read_ssl=0;
965                                 write_tty=1;
966                                 break;
967                         case SSL_ERROR_WANT_WRITE:
968                                 BIO_printf(bio_c_out,"read W BLOCK\n");
969                                 write_ssl=1;
970                                 read_tty=0;
971                                 break;
972                         case SSL_ERROR_WANT_READ:
973                                 BIO_printf(bio_c_out,"read R BLOCK\n");
974                                 write_tty=0;
975                                 read_ssl=1;
976                                 if ((read_tty == 0) && (write_ssl == 0))
977                                         write_ssl=1;
978                                 break;
979                         case SSL_ERROR_WANT_X509_LOOKUP:
980                                 BIO_printf(bio_c_out,"read X BLOCK\n");
981                                 break;
982                         case SSL_ERROR_SYSCALL:
983                                 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
984                                 goto shut;
985                         case SSL_ERROR_ZERO_RETURN:
986                                 BIO_printf(bio_c_out,"closed\n");
987                                 goto shut;
988                         case SSL_ERROR_SSL:
989                                 ERR_print_errors(bio_err);
990                                 goto shut;
991                                 /* break; */
992                                 }
993                         }
994
995 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
996 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
997                 else if (_kbhit())
998 #else
999                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1000 #endif
1001 #elif defined (OPENSSL_SYS_NETWARE)
1002         else if (_kbhit())
1003 #else
1004                 else if (FD_ISSET(fileno(stdin),&readfds))
1005 #endif
1006                         {
1007                         if (crlf)
1008                                 {
1009                                 int j, lf_num;
1010
1011                                 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
1012                                 lf_num = 0;
1013                                 /* both loops are skipped when i <= 0 */
1014                                 for (j = 0; j < i; j++)
1015                                         if (cbuf[j] == '\n')
1016                                                 lf_num++;
1017                                 for (j = i-1; j >= 0; j--)
1018                                         {
1019                                         cbuf[j+lf_num] = cbuf[j];
1020                                         if (cbuf[j] == '\n')
1021                                                 {
1022                                                 lf_num--;
1023                                                 i++;
1024                                                 cbuf[j+lf_num] = '\r';
1025                                                 }
1026                                         }
1027                                 assert(lf_num == 0);
1028                                 }
1029                         else
1030                                 i=read(fileno(stdin),cbuf,BUFSIZZ);
1031
1032                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1033                                 {
1034                                 BIO_printf(bio_err,"DONE\n");
1035                                 goto shut;
1036                                 }
1037
1038                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1039                                 {
1040                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1041                                 SSL_renegotiate(con);
1042                                 cbuf_len=0;
1043                                 }
1044                         else
1045                                 {
1046                                 cbuf_len=i;
1047                                 cbuf_off=0;
1048 #ifdef CHARSET_EBCDIC
1049                                 ebcdic2ascii(cbuf, cbuf, i);
1050 #endif
1051                                 }
1052
1053                         write_ssl=1;
1054                         read_tty=0;
1055                         }
1056                 }
1057 shut:
1058         SSL_shutdown(con);
1059         SHUTDOWN(SSL_get_fd(con));
1060         ret=0;
1061 end:
1062         if(prexit) print_stuff(bio_c_out,con,1);
1063         if (con != NULL) SSL_free(con);
1064         if (con2 != NULL) SSL_free(con2);
1065         if (ctx != NULL) SSL_CTX_free(ctx);
1066         if (cert)
1067                 X509_free(cert);
1068         if (key)
1069                 EVP_PKEY_free(key);
1070         if (pass)
1071                 OPENSSL_free(pass);
1072         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1073         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1074         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1075         if (bio_c_out != NULL)
1076                 {
1077                 BIO_free(bio_c_out);
1078                 bio_c_out=NULL;
1079                 }
1080         apps_shutdown();
1081         OPENSSL_EXIT(ret);
1082         }
1083
1084
1085 static void print_stuff(BIO *bio, SSL *s, int full)
1086         {
1087         X509 *peer=NULL;
1088         char *p;
1089         static const char *space="                ";
1090         char buf[BUFSIZ];
1091         STACK_OF(X509) *sk;
1092         STACK_OF(X509_NAME) *sk2;
1093         SSL_CIPHER *c;
1094         X509_NAME *xn;
1095         int j,i;
1096         const COMP_METHOD *comp, *expansion;
1097
1098         if (full)
1099                 {
1100                 int got_a_chain = 0;
1101
1102                 sk=SSL_get_peer_cert_chain(s);
1103                 if (sk != NULL)
1104                         {
1105                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
1106
1107                         BIO_printf(bio,"---\nCertificate chain\n");
1108                         for (i=0; i<sk_X509_num(sk); i++)
1109                                 {
1110                                 X509_NAME_oneline(X509_get_subject_name(
1111                                         sk_X509_value(sk,i)),buf,sizeof buf);
1112                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
1113                                 X509_NAME_oneline(X509_get_issuer_name(
1114                                         sk_X509_value(sk,i)),buf,sizeof buf);
1115                                 BIO_printf(bio,"   i:%s\n",buf);
1116                                 if (c_showcerts)
1117                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
1118                                 }
1119                         }
1120
1121                 BIO_printf(bio,"---\n");
1122                 peer=SSL_get_peer_certificate(s);
1123                 if (peer != NULL)
1124                         {
1125                         BIO_printf(bio,"Server certificate\n");
1126                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
1127                                 PEM_write_bio_X509(bio,peer);
1128                         X509_NAME_oneline(X509_get_subject_name(peer),
1129                                 buf,sizeof buf);
1130                         BIO_printf(bio,"subject=%s\n",buf);
1131                         X509_NAME_oneline(X509_get_issuer_name(peer),
1132                                 buf,sizeof buf);
1133                         BIO_printf(bio,"issuer=%s\n",buf);
1134                         }
1135                 else
1136                         BIO_printf(bio,"no peer certificate available\n");
1137
1138                 sk2=SSL_get_client_CA_list(s);
1139                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
1140                         {
1141                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
1142                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
1143                                 {
1144                                 xn=sk_X509_NAME_value(sk2,i);
1145                                 X509_NAME_oneline(xn,buf,sizeof(buf));
1146                                 BIO_write(bio,buf,strlen(buf));
1147                                 BIO_write(bio,"\n",1);
1148                                 }
1149                         }
1150                 else
1151                         {
1152                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
1153                         }
1154                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
1155                 if (p != NULL)
1156                         {
1157                         /* This works only for SSL 2.  In later protocol
1158                          * versions, the client does not know what other
1159                          * ciphers (in addition to the one to be used
1160                          * in the current connection) the server supports. */
1161
1162                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
1163                         j=i=0;
1164                         while (*p)
1165                                 {
1166                                 if (*p == ':')
1167                                         {
1168                                         BIO_write(bio,space,15-j%25);
1169                                         i++;
1170                                         j=0;
1171                                         BIO_write(bio,((i%3)?" ":"\n"),1);
1172                                         }
1173                                 else
1174                                         {
1175                                         BIO_write(bio,p,1);
1176                                         j++;
1177                                         }
1178                                 p++;
1179                                 }
1180                         BIO_write(bio,"\n",1);
1181                         }
1182
1183                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
1184                         BIO_number_read(SSL_get_rbio(s)),
1185                         BIO_number_written(SSL_get_wbio(s)));
1186                 }
1187         BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
1188         c=SSL_get_current_cipher(s);
1189         BIO_printf(bio,"%s, Cipher is %s\n",
1190                 SSL_CIPHER_get_version(c),
1191                 SSL_CIPHER_get_name(c));
1192         if (peer != NULL) {
1193                 EVP_PKEY *pktmp;
1194                 pktmp = X509_get_pubkey(peer);
1195                 BIO_printf(bio,"Server public key is %d bit\n",
1196                                                          EVP_PKEY_bits(pktmp));
1197                 EVP_PKEY_free(pktmp);
1198         }
1199         comp=SSL_get_current_compression(s);
1200         expansion=SSL_get_current_expansion(s);
1201         BIO_printf(bio,"Compression: %s\n",
1202                 comp ? SSL_COMP_get_name(comp) : "NONE");
1203         BIO_printf(bio,"Expansion: %s\n",
1204                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
1205         SSL_SESSION_print(bio,SSL_get_session(s));
1206         BIO_printf(bio,"---\n");
1207         if (peer != NULL)
1208                 X509_free(peer);
1209         /* flush, or debugging output gets mixed with http response */
1210         BIO_flush(bio);
1211         }
1212